Kewaunee, WI John Wergin

I am looking for information on the parents of John Wergin of Kewaunee, WI.This JOhn was born Aug 1849 in Germany and married Frances Sziniecki in 1877.They had 11 children--John, Anna, Anton, (one of thesedied in early childhood)--possibly born in IL.The other 8 children were all born in Wi--Andrew Jacob (direct line), Jospehine, Pauline (Polly), Joseph P., Julius, Peter, Mary & Theodore.